ENS 50313
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ENS Event | |
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18:11 Jul 26, 2014 | |
Title | Technical Specification Required Shutdown Due to Turbine Driven Afw Pump Failure |
Event Description | At 1458 [EDT] on 7/26/14, the [Technical Specification] 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> action statement for TDAFWP [Turbine Driven Auxiliary Feedwater Pump] inoperable expires (LCO 3.7.1.1 Action C). Per Technical Specification Action Statement, plant is required to be in HOT STANDBY by 2058 on 7/26/14 (6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />) and in HOT SHUTDOWN by 0858 on 7/27/14 (additional 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />). MPS [Millstone Power Station] Unit 2 shutdown (using normal procedures) has commenced at 1411 when troubleshooting and repairs were unable to determine and correct cause of low pump recirculation flow. Additional activities will continue to correct issue.
Unit 3 is not affected by this event. All safety-related systems and equipment required for safe plant shutdown are available. The licensee notified the NRC Resident Inspector, Waterford Dispatch, and State of Connecticut Department of Energy and Environmental Protection. |
Where | |
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Millstone Connecticut (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
Time - Person (Reporting Time:+-2.95 h-0.123 days <br />-0.0176 weeks <br />-0.00404 months <br />) | |
Opened: | Michael Frechette 15:14 Jul 26, 2014 |
NRC Officer: | Jeff Rotton |
Last Updated: | Jul 26, 2014 |
50313 - NRC Website
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Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (80 %) |
WEEKMONTHYEARENS 544492019-12-18T00:29:00018 December 2019 00:29:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown ENS 503132014-07-26T18:11:00026 July 2014 18:11:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Turbine Driven Afw Pump Failure ENS 498602014-02-27T13:09:00027 February 2014 13:09:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Plant Shutdown Required by Technical Specification ENS 497792014-01-31T08:30:00031 January 2014 08:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Degradation of the Pressurizer Proportional Heaters Group 1 ENS 520002013-06-13T00:13:00013 June 2013 00:13:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown and Reactor Trip ENS 481812012-08-12T04:44:00012 August 2012 04:44:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Ultimate Heat Sink Exceeding Temperature Limit ENS 472392011-09-03T19:30:0003 September 2011 19:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to "a" Train Service Water Leak ENS 424632006-04-01T03:20:0001 April 2006 03:20:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Inoperable Afw Turbine 2019-12-18T00:29:00 | |
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